Category Archives: ASTROPHYSICS

What will happen to the Solar system ? The Fate of Sun & Planets

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What will happen to the Solar system ? The Fate of Sun & Planets

Our Earth is the only planet so far which we encountered to be having life, taking this privilege of superior beings, still, we cannot stay forever on this earth. because of even the genesis stimulator sun is also not permanent.

Long in the span of time, Sun will eat the earth and churn inside it, like a big monster. we don’t know what will be the fate of our planets.  In another five billion years, the Sun will use up most of its hydrogen fuel.It will enter the ending stages of its life. The middle of the Sun will shrink down and become even hotter.

The outer layer of the Sun will grow much bigger than it is now. It will form a red giant.It will be big to the point that Mercury and Venus, likely Earth and possibly Mars will be inside the sun. These planets will consume with extreme heat.Which planets get pulverized will rely upon how much mass the Sun has left.

A solid sun-based breeze will blow a portion of the external layers of gas from the Sun. The Sun will have less mass. The Sun’s gravity will be less. The majority of the planets will move far from the Sun.After it has been a red giant for some time, the Sun will begin to consume helium.

It will contract down and won’t be a red giant anymore.It will utilize the helium up in around a billion years. At that point, it will end up being a red giant indeed. More gas will overwhelm for a couple of hundred thousand years. A planetary nebula will form. The nebula could last for a few thousand to a few tens of thousands of years.

It will glow in the light of the Sun At the inside, the Sun may contract into a little star called a white dwarf. That sort of star is about the extent of Earth. It would take around 100 of these white dwarf, stacked end to end, to be as wide as the Sun is today. The Sun won’t have any more fuel to consume. It will have heaps of warmth left finished and will continue getting cooler and dimmer. At that point, its light will go out in a hundred quite a while from now.

Copyright © 2018 by Akshay Kumar [Samal das akshay] All rights reserved. This Post or any portion thereafter may not be reproduced or used in any manner whatsoever without the express written permission of the publisher.

Mail me: akshaykumar@melodiesphysics.com

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Astronomical phenomena of 2018

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Astronomical phenomena of 2018

Astronomy/astronomical phenomena events in this year (2018), organized by Nature. who manages these things?

no one knows,,. a mysterious universe and it’s acts… thanks to creator… God? really i don’t have answer.
we need to just enjoy this spectacular events,witness this events. one lunar eclipse (a beautiful blood moon added a great satisfaction of witnessing it through naked eyes. many more to come.
pic credit: Cathy’s the skies [Physics and astronomy zone]

Astronomical phenomena  2018

1.January : Super-blood moon- spectacle can be observed from Asia (including parts of India), North America, and Australia.

2.February: A Partial solar eclipse will happen on February 15, 2018.

3.March: blue moon of 2nd and 1st march.

 Click for complete information

Copyright © 2018 by Akshay Kumar [Samal das akshay] All rights reserved. This Post or any portion thereafter may not be reproduced or used in any manner whatsoever without the express written permission of the publisher.

Mail me: akshaykumar@melodiesphysics.com

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Spectrum Analysis of star – Astrophysics

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Spectrum Analysis of star – Astrophysics

https://akshaykumarphysics.wordpress.com/2016/01/18/cosmology-stellar-spectrum-importance-ssi/

COSMOLOGY-STELLAR SPECTRUM IMPORTANCE (SSI)

A branch of astronomy that deals with the origin, structure and space-time relationships of the universe the cosmology as a study manifests visible universe and the non-visible part also.

We humans always thrilled and fascinated by the play of starlight which is spectacular to see through eyes to look and feel the cosmic acts which are present in this universe. So my article here presents the stellar spectral importance (SSI).

If a history of spectral analysis is checked, we come across on experimenter William Wollaston who was the Great physicist. Once passed a beam of sunlight through a thin slit and then through a prism.

The slit provided familiar rainbow spectrum with no color overlapping each other. When seen, Wollaston noticed, our star sun’s spectrum was having some black lines in it. This was the fundamental idea. The early spectral studies actually began with the discovery of so many secrets of lines absorbed by elements in the spectrum of the sun.

It was absorbed by elements present in the star or sun, an intensive idea was got foundation further by German physicist Joseph Fraunhofer in 1814. Bright and continuous spectrum is results of superposition of these lines have been named in honor of the discovery as Fraunhofer lines. To explain in simple Words for above sentences when metals heated beyond the certain temperature, emits white light. The Early stellar spectra showing the Distinctive absorption lines these astronomers used to determine stars composition and temperature. This above method is still in use. This set of spectra comes from the original Henry Draper Catalogue.

But elements can only absorb light that can excite their electrons from one valence bond to another. This is not same for all metals. The frequency and wavelength corresponding to the energy, as the way the missing wavelength will give away the Ionization level or state of energy and the elements are identified.

Thus the composition of the star is determined. But stellar spectroscopy is the study of the specter of starlight. it is the very powerful tool that enables Astrophysicist to infer many Physical and chemical properties of stars and to divide them in an order which is easier for further analysis. I personally think that SSI stellar spectral importance is the best discovery in cosmology. This is key to the mysteries present in stars and galaxies.

Contact Author:
Akshay Kumar akshaykumarphysics@gmail.com

Copyright © 2018 by Akshay Kumar [Samal das akshay] All rights reserved. This Post or any portion thereafter may not be reproduced or used in any manner whatsoever without the express written permission of the publisher.

Mail me: akshaykumar@melodiesphysics.com Follow me on the Twitter and Facebook page https://twitter.com/akshayphysicshttps://www.facebook.com/melodiesphysics

Endurance: A Year in Space, A Lifetime of Discovery – Review by Akshay Kumar

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Endurance: A Year in Space, A Lifetime of Discovery – Review by Akshay Kumar

Scott Kelly is a previous military pilot and aircraft tester, a designer, A veteran of four space flights, Kelly ordered the International Space Station (ISS) on three undertakings and was an individual from the yearlong mission to the ISS. In October 2015, he set the record for the aggregate collected number of days spent in space, the single longest space mission by an American space traveler.

His indistinguishable twin sibling is Mark Kelly, additionally, a previous space explorer. The veteran of four space flights and the American record holder for successive days spent in space, Scott Kelly has encountered things not very many have. Presently, he takes us inside a circle absolutely unfriendly to human life.

He portrays exploring the outrageous test of long haul spaceflight, both existential and worn-out: the staggering impacts on the body; the seclusion from everybody he cherishes and the solaces of Earth; the weights of steady close dwelling together; the cataclysmic dangers of depressurization or crashing into space garbage, the still all the more eerie risk of being not able to help should disaster strike at home- – a horrifying circumstance Kelly confronted when, on another mission, his twin sibling’s significant other, Gabrielle Giffords, was shot while regardless he had two months in space.

Kelly’s mankind, empathy, silliness, and enthusiasm resound all through, as he reviews his harsh and-tumble New Jersey adolescence and the energetic motivation that started his shocking profession, and as he clarifies his conviction that Mars will be the following, at last, difficult advance in American spaceflight. A characteristic storyteller and current saint, Kelly has a message of seeking the future that will motivate for ages to come. Here, in his own story, we see the triumph of the human creative energy, the quality of the human will, and the endless ponder of the cosmic system.

About Kelly: Kelly’s first spaceflight was as pilot of Space Shuttle Discovery, amid STS-103 in December 1999. This was the third overhauling mission to the Hubble Space Telescope and went on for just shy of eight days. Kelly’s second spaceflight was as mission administrator of STS-118, a 12-day Space Shuttle mission to the International Space Station in August 2007.

Kelly’s third spaceflight was as leader of Expedition 26 on the ISS. He arrived 9 October 2010, on a Russian Soyuz spacecraft, during Expedition 25, and filled in as a flight build until the point when it finished. He assumed control summons of the station on 25 November 2010, toward the begin of Expedition 26 which started formally when the rocket Soyuz TMA-19 undocked, conveying the past leader of the station, Douglas H. Wheelock.Expedition 26 finished on 16 March 2011 with the flight of Soyuz TMA-01M. This was Kelly’s initially long-length spaceflight.

© Akshay Kumar [2017]

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Fabric of Space-Time [astrophysics] Part – 2

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Fabric of Space-Time [astrophysics] Part – 2

What is the best gift of modern physics?

Modern Physics has given the most valuable asset to the world of science. Principles that are used to describe our nature are limited. many laws are being stated and few of them succeed in proving them theoretically and sometimes experimentally, few are proved wrong.

One such curious concept read over decades, it’s also a mind-boggling concept. It is space – time. let’s see what I can say about it.

Do you know about space?

Space which is 3-Dimensional or multidimensional quantity along with planes in their curves [space-time fabric], entities will be much complex. Few people have believed that double slit experiment of physics leads to the wave nature of light, So usual science and its thoughts transformed then.

Space is the boundless three-dimensional extent in which objects and events have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime.

space is everything in the universe beyond the top of the Earth’s atmosphere – the Moon, where the GPS satellites orbit, Mars, other stars, the Milky Way, black holes, and distant quasars. this statement defines space, which is rather part of the universe, not to consider as a physical quantity.

What about time? Good time, bad time

Time is a very fascinating thing in this universe, is that time what that clock shows? or time is beyond our imagination? research says, In the beginning of time there was a singularity, where our time started. but the concept of time breaks the laws of physics. many contradictory statements are noticed to say whether the time is absolute or time is relative. but anyway modern physics and its triumph in theoretical research declared time as a non-absolute quantity.

Time and space is a continuum, we don’t have proper evidence to say time is universal, In other words, since there is no universal time. we have no time, which we can synchronize clocks. In this real world, what we also call a macroscopic world, here it’s very difficult to notice.

but man made things like space vehicles and satellites which travel in space are synchronized. For GPS to work we must make sure those are adjusted to similar bending of space time to coordinates of systems present in the earth.

to be continued,

 

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Fabric of space-time

 

© Akshay Kumar [2017]

You can Follow Me at https://twitter.com/akshayphysics

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Previous article, https://akshaykumarphysics.wordpress.com/2017/08/16/stellar-spectrum-importance-ssi-astrophysics-part-1/

Age of universe

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Age of universe

cosmology is the science of universe and large scale structure of it.it begin in studies extensively by the begining of the 20th centuary by Albert einstien.

the general theory of relativity which had sufficient ideology to construct mathematical models of the universe.

and it given strong base by Edwin hubble’s own measurements of hus constant.

The age ofuniverse is approximatly about 13 billion years.

it was in  the midst of  this chaos that the hubble space telescope was launched 1990.the hubble’s space telescope was on the high side implying a rather young universe,also depending on what theoretical mode is accepted.Scientists say the universe could be just 8 billion years old if the hubble constant is precisely 80.